Territory



E. PEMENT.

LATHE GHUGK.

(Model.)

I Patented July 2'1,

gVENTOB I mmfl ATTORNEYS.

N. PETERS PhOIwLVIhngnphar. Washingtnn, D. C.

UNITE STATES PATENT OFFICE.

EDXVARD PEMENT, OF ESMON D, DAKOTA TERRITORY.

LATHE-CHUCK.

SPECIFICATION forming part of Letters Patent No. 322,636, dated July 21, 1885.

' Application filed April 14, 1885. Modem i To all whom it may concern.- 7

Be it known that I, EDWARD PEMENT, of Esmond, in the county of Kingsbury and Territory of Dakota, have invented a new and Improved Face-Plate and Lathe-Chuck Attachment, of which the following is a full ,clear, and exact description.

The object of my invention is to provide a new and improved face-plate and chuck attachment, by means of which the operator is enabled to bring any point on the face of his work to the center very easily and rapidly.

The invention consists in the construction, arrangement, and combination of parts and details, as will be fully set forth and described hereinafter.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is alongitudinal sectional elevation of my improved face-plate and chuck attachment. Fig. 2 is a face View of the same, parts being broken out and others in section. Fig. 3 is a face view of theinner section. Fig. 4is an inside face view of the middle section. Fig. Fig. 5 is a longitudinal sectional view of the lower part of the middle section. Fig. 6 is a detail sectional view on the liney y, Fig. 3.

My improved attachment consists of the inner section, A, the middle section, B, and the outer section, 0. The inner section, A,which consists of a chuck-disk, has a central screwthreaded bore, D, and is provided on its outer end with an eccentric proj ection,E, upon which is cut a screw-thread extending from the outer end of said projection or eccentric inwardly and occupying about two-thirds (more or less) of its circumference. A collar, W, is screwed on the said projection, and upon the collar is fitted a flange of the split collar F, the free end of which flange extends to the section A. The collar WV is provided with recesses tV for receiving the end of a screw or pin, U, which is passed through an aperture, V, in the rim 'B of the section B to prevent the collar XV from unscrewing from the projection E. An aperture, U, is provided in the rim B and in the collar 7 for receiving a punch or other implement for turning the section B and the collar XV to screw the'latter on the projection E.

for turning the said screw G. A split collar,H,

is formed on the lower part of the section B, on the outer surface of the same, and through the ends of the said split collar a screw, J, is

passed for clamping the collar on the circular projection K on the inner surface of the outer section, 0. A worm-thread, L, is cutin parts of the rim of the projection K, and engages with a worm, M, formed on a spindle, N, in the section B. The section 0 has the grooves O for the chuck-jaws. The sections B and C have concentric central bores, P. A hollow bolt, B, isscrewed in the bores of the sections 'B and C. V The bolt R is made hollow, so as to permit a center being used whenever required. The section A is screwed on the lathe-spindle S, or on the spindle of any other machine on which the attachment can be used effectually. When the screw J is loosened, the section 0 can be turned on the section B by n eans of the worms M N, and then locked in place by the screw J. By turning the section B on the section A it is moved laterally and vertically at the same time, and can be locked in place by means of the screw G.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

lulu a face-plate and chuck attachment, the combinatiomwith thesection A, having a projection, E,which is screw-threaded on its rim, of a screw-collar, WV, screwed on the said projection, and the section B, which is clamped.

on the collar XV, substantially as herein shown and described.

2. In a face-plate and chuck attachment, the combination,with the section A, having the eccentric projection E,the rim of which is screwthreaded, of the screwcollar NV and the section B, the said section B and the screw-collar bein g I provided with apertures for receiving the split collar F, and of the screw G, substantially as herein shown and described.

6. In a face-plate and chuck attachment, the combination, with the section B, having the split collar H, of the screw J, the section 0. having the projection K, and of the worm M on the spindle N, substantially as herein shown and described.

7. Inaface-plate and chuck attachment, the conibination,with the section A, having the eccentric projeetion E, of the section B, having the split collars F and H, the screws G and J, 2 5

and of the section 0, substantially as described.

EDWARD PEMENT. Vitnesses:

W. H. HUMPHREY, PETER Wns'r. 

